Replace service (#770)

* update sample

* Update ogc/wmts-layer/README.md

Co-authored-by: Rachael Ellen <[email protected]>

* Update ogc/wmts-layer/src/main/java/com/esri/samples/wmts_layer/WmtsLayerSample.java

Co-authored-by: Rachael Ellen <[email protected]>

* Update ogc/wmts-layer/README.md

Co-authored-by: Rachael Ellen <[email protected]>

Co-authored-by: Rachael Ellen <[email protected]>

Author: jenmerritt

ogc/wmts-layer/README.md

@@ -15,9 +15,9 @@ Pan and zoom to explore the WMTS layer, which is displayed automatically.
 ## How it works
 
 1. Create a `WmtsService` using the URL of the WMTS Service.
-1. After loading the WMTS service, get the list of `WmtsLayerInfos` from the service info: `service.getServiceInfo().getLayerInfos()`
-1. Use one of the layer infos to create a new `WmtsLayer(layerInfos.get(0))`
-1. Set it as the map's basemap with `map.setBasemap(new Basemap(wmtsLayer))`.
+2. After loading the WMTS service, get the list of `WmtsLayerInfos` from the service info: `service.getServiceInfo().getLayerInfos()`
+3. Create a new `WmtsLayer` from a `WmtsLayerInfo`
+4. Set it as the map's basemap with `map.setBasemap(new Basemap(wmtsLayer))`.
 
 ## Relevant API
 
@@ -28,7 +28,7 @@ Pan and zoom to explore the WMTS layer, which is displayed automatically.
 
 ## About the data
 
-The map visualizes world time zones.
+We acknowledge the use of imagery provided by services from the [Global Imagery Browse Services (GIBS)](https://wiki.earthdata.nasa.gov/display/GIBS/), operated by the [NASA/GSFC/Earth Science Data and Information System (ESDIS)](https://earthdata.nasa.gov/) with funding provided by NASA/HQ. This sample shows the Digital Elevation Model (Color Index, SRTM) layer from the WMTS service provided by GIBS, using the "SRTM_Color_Index" identifier. 
 
 ## Tags
 

ogc/wmts-layer/WmtsLayer.png

@@ -17,11 +17,7 @@
 package com.esri.samples.wmts_layer;
 
 import java.util.List;
-import javafx.application.Application;
-import javafx.scene.Scene;
-import javafx.scene.control.Alert;
-import javafx.scene.layout.StackPane;
-import javafx.stage.Stage;
+import java.util.stream.Collectors;
 
 import com.esri.arcgisruntime.layers.WmtsLayer;
 import com.esri.arcgisruntime.loadable.LoadStatus;
@@ -31,6 +27,11 @@
 import com.esri.arcgisruntime.ogc.wmts.WmtsLayerInfo;
 import com.esri.arcgisruntime.ogc.wmts.WmtsService;
 import com.esri.arcgisruntime.ogc.wmts.WmtsServiceInfo;
+import javafx.application.Application;
+import javafx.scene.Scene;
+import javafx.scene.control.Alert;
+import javafx.scene.layout.StackPane;
+import javafx.stage.Stage;
 
 public class WmtsLayerSample extends Application {
 
@@ -58,15 +59,17 @@ public void start(Stage stage) {
       mapView.setMap(map);
 
       // create a WMTS service from a URL
-      String serviceURL = "https://sampleserver6.arcgisonline.com/arcgis/rest/services/WorldTimeZones/MapServer/WMTS";
+      String serviceURL = "https://gibs.earthdata.nasa.gov/wmts/epsg4326/best";
       wmtsService = new WmtsService(serviceURL);
       wmtsService.addDoneLoadingListener(() -> {
         if (wmtsService.getLoadStatus() == LoadStatus.LOADED) {
           WmtsServiceInfo wmtsServiceInfo = wmtsService.getServiceInfo();
-          // get the first layer's ID
-          List<WmtsLayerInfo> layerInfos = wmtsServiceInfo.getLayerInfos();
+          // obtain the read only list of WMTS layer info objects, and select the one with the desired Id value.
+          List<WmtsLayerInfo> wmtsLayerInfos = wmtsServiceInfo.getLayerInfos();
+          WmtsLayerInfo layerInfo = wmtsLayerInfos.stream()
+            .filter(layer -> layer.getId().equals("SRTM_Color_Index")).collect(Collectors.toList()).get(0);
           // create the WMTS layer with the LayerInfo
-          WmtsLayer wmtsLayer = new WmtsLayer(layerInfos.get(0));
+          WmtsLayer wmtsLayer = new WmtsLayer(layerInfo);
           map.setBasemap(new Basemap(wmtsLayer));
         } else {
           Alert alert = new Alert(Alert.AlertType.ERROR, "Failed to load WMTS layer");